VTX B28

អាចរៀបចំបានជាពីរលំ-អុិនឆ័ត Subwoofer

VTX B28
រូបភាពធំជាង

The VTX B28 is JBL Professional’s next-generation dual 18-inch subwoofer, designed to complement the company’s flagship VTX full-range sound reinforcement systems, and capable of delivering uncompromised low-frequency performance, even for the most demanding shows on the planet. The B28 boasts JBL Differential Drive transducers, an exclusive port design, and the same industrial design found in JBL’s VTX A-Series products. It is equally ideal flown or ground stacked, in omnidirectional or cardioid configurations. Simple and fast rigging, a selection of accessories, and software support make the B28 an exceptional choice for rental, AV, and touring companies, as well as in high-end fixed installations.

A simple, integral, two-point rigging system allows flown arrays of up to 16 B28 enclosures. Three M20 pole mount attachments on the enclosure’s top can interface with standard Base Plate accessories for the A12, A8, and V20 systems to create ground stacked systems. B28 systems are powered exclusively by Crown I-Tech HD amplifiers and are fully integrated into JBL’s software ecosystem.

លក្ខណៈពិសេស

  • Delivers transparent, linear bass response down to 25 Hz
  • JBL Differential Drive woofers
  • Large double-flared port for greater extension and reduced turbulence
  • Simple 2-point spring-loaded rigging system
  • FEA-optimized enclosure
  • Front and rear NL4 connectors
  • Support for omnidirectional or cardioid modes
  • Acoustically compatible with all VTX full-range products
  • Flexible accessory options

ការវាយតម្លៃ

"The definition and stereo imagery of the boxes were next level. The B28 Subs were so much, I had to lower them by about 10db during my sound check and also for showtime, which I almost never do for Hip Hop performances. To be clear! There were a lot of subs, but very punchy and smooth." 
—Courtney Taylor (FOH for G Eazy)

ការទាញយក

Specifications
  កំណែ ភាសា ទំហំ បានផ្ទុកឡើង
file type icon VTX B28 Spec Sheet
en កំណែ C, បានធ្វើបច្ចុប្បន្នភាព: ធ្នូ 2020
en  379 KB ធ្នូ 2020
Manuals
  កំណែ ភាសា ទំហំ បានផ្ទុកឡើង
file type icon VTX B28 User Manual
en កំណែ C, បានធ្វើបច្ចុប្បន្នភាព: កក្កដា 2023
en  8.1 MB កក្កដា 2023
file type icon VTX B28 Rigging Manual
en កំណែ A, បានធ្វើបច្ចុប្បន្នភាព: កក្កដា 2023
en  14.7 MB កក្កដា 2023
CAD Drawings
  កំណែ ទំហំ បានផ្ទុកឡើង
file type icon VTX B28 Customer Drawings
កំណែ A, បានធ្វើបច្ចុប្បន្នភាព: ធ្នូ 2020
1.1 MB ធ្នូ 2020
file type icon VTX B28 Revit Files
កំណែ 2.0, បានធ្វើបច្ចុប្បន្នភាព: តុលា 2022
2.0  8.94 MB តុលា 2022
file type icon VTX B28 Sketchup Files
កំណែ 2.0, បានធ្វើបច្ចុប្បន្នភាព: តុលា 2022
2.0  1.2 MB តុលា 2022
file type icon VTX B28 Archicad Files
កំណែ 1.0, បានធ្វើបច្ចុប្បន្នភាព: កក្កដា 2022
1.0  1.44 MB កក្កដា 2022
Software
  ទំហំ បានផ្ទុកឡើង
download icon for Venue Synthesis Venue Synthesis
ចេញផ្សាយ: មករា 2025
មករា 2025
download icon for Performance Manager 3 Performance Manager 3
ចេញផ្សាយ: កក្កដា 2024
កក្កដា 2024
Declaration of Conformity
  កំណែ ភាសា ទំហំ បានផ្ទុកឡើង
file type icon VTX B28 EU Declaration of Conformity
en កំណែ A, បានធ្វើបច្ចុប្បន្នភាព: កុម្ភៈ 2021
en  206 KB កុម្ភៈ 2021
Ease Data
  កំណែ ទំហំ បានផ្ទុកឡើង
file type icon VTX B28 EASE GLL
កំណែ 1.0, បានធ្វើបច្ចុប្បន្នភាព: ធ្នូ 2020
1.0  1.28 MB ធ្នូ 2020
Preset Libraries
  កំណែ ទំហំ បានផ្ទុកឡើង
file type icon VTX B28 Preset Library
កំណែ 1.0.0, បានធ្វើបច្ចុប្បន្នភាព: សីហា 2020
1.0.0  576 KB សីហា 2020
Service Notes
  កំណែ ភាសា ទំហំ បានផ្ទុកឡើង
file type icon VTX B28 Spare Parts
en កំណែ A, បានធ្វើបច្ចុប្បន្នភាព: មេសា 2026
en  69.3 KB មេសា 2026

ប្រសិនបើតំណភ្ជាប់ខាងលើបង្ហាញអក្សរចម្លែកក្នុងកម្មវិធីរុករករបស់អ្នក សូមចុចខាងស្តាំលើឯកសារដើម្បីរក្សាទុកទៅកុំព្យូទ័ររបស់អ្នក។

ផ្នែក និងសេវាកម្ម

លក្ខណៈពិសេស

Frequency Range (-10dB) 25 Hz - 80 Hz (Preset: VTX B28 80)
Coverage Pattern Omnidirectional or Cardioid
Maximum Peak Output 141dB (Preset: VTX B28 80)
System Amplification Crown Audio I-Tech HD
System Impedance 4 ohms
LF Driver (2) JBL 2288H-M 18-inch woofers
Enclosure Finnish birch plywood, Black DuraFlex finish, four integral recessed handles
Suspension / Mounting Captive suspension plates, captive pins, spring-loaded mechanism, 2-step safety lock
Dimensions (H x W x D) 508 mm x 1324 mm x 750 mm
20 in x 52.1 in x 29.5 in
Net Weight 87 kg (191.8 lbs)

គ្រឿងបន្លាស់

VTX B28 SB | Suspension Bar
VTX B28 SB Main photo
រូបភាពធំជាង
VTX B28 SB detail thumbnail #1 VTX B28 SB detail thumbnail #2 VTX B28 SB detail thumbnail #3 VTX B28 SB detail thumbnail #4

Highlights:

  • Versatile suspension bar accessory for B28 subwoofer
  • Single-point and dual-point support
  • Secondary safety attachment points included
  • Support for (16) B28 enclosures
  • Lightweight, fully symmetric design
  • Shackle Size: 5/8 inch

Included:

  • (1) VTX B28 SB Suspension Bar
  • (2) 5/8 in 4.5 T Shackle

ឯកសារ
VTX B28 ACC | Accessory Casterboard and Cover for VTX B28
VTX B28 ACC Main photo
រូបភាពធំជាង
VTX B28 ACC detail thumbnail #1 VTX B28 ACC detail thumbnail #2 VTX B28 ACC detail thumbnail #3 VTX B28 ACC detail thumbnail #4

Highlights:

  • Transportation kit for VTX B28
  • Includes protective cover and caster board
  • Handle cutouts and rear panel access flap
  • Tour-grade casters
  • Stackable for convenient storage
  • Rotating locking cam mechanisms for secure attachment to B28 enclosures

Included:

  • (1) Caster board for VTX B28
  • (1) Padded protective cover for VTX B28 (cover part number: 5123768-00)

ឯកសារ
VTX B28 VT | Vertical Transporter Accessory for VTX B28
VTX B28 VT Main photo
រូបភាពធំជាង
VTX B28 VT detail thumbnail #1 VTX B28 VT detail thumbnail #2 VTX B28 VT detail thumbnail #3 VTX B28 VT detail thumbnail #4

Highlights:

  • Vertical transport cart for up to four VTX B28 enclosures
  • Truck-friendly dimensions
  • Built-in stacking features for easy storage
  • Lightweight aluminum design
  • Heavy-duty tour-grade casters
  • Compatible with the VTX A12 VT GND

Included:

  • (1) VTX B28 VT Vertical Transporter Cart

ឯកសារ
VTX B28 VT CVR | Vertical Transporter Cover for B28
VTX B28 VT CVR Main photo
រូបភាពធំជាង
VTX B28 VT CVR detail thumbnail #1 VTX B28 VT CVR detail thumbnail #2 VTX B28 VT CVR detail thumbnail #3

Highlights:

  • Heavy-duty soft cover for VTX B28 stacks
  • Covers three or four VTX B28 enclosures
  • Includes input-panel flaps for testing purposes
  • Clear see-through pocket for shipping labels
  • Handle cutouts for easy transportation
  • Heavy-duty industrial-grade zippers
  • Foldable design for storage

Included:

  • (1) VTX B28 VT CVR Cover

ឯកសារ
VTX B28 GND | Ground Stack Accessory for VTX B28
VTX B28 GND Main photo
រូបភាពធំជាង
VTX B28 GND detail thumbnail #1 VTX B28 GND detail thumbnail #2 VTX B28 GND detail thumbnail #3 VTX B28 GND detail thumbnail #4

Highlights:

  • Improves stability of ground stacks built on the B28 subwoofer
  • Attaches directly to B28 integral rigging
  • Simple two-part design
  • Lightweight

Included:

  • (2) VTX B28 outriggers (left/right)

ឯកសារ
VTX A12 VT GND | ផ្ទេរដឹក បញ្ឈរ មូលដ្ឋាន ជង់
VTX A12 VT GND Main photo
រូបភាពធំជាង
VTX A12 VT GND detail thumbnail #1 VTX A12 VT GND detail thumbnail #2 VTX A12 VT GND detail thumbnail #3 VTX A12 VT GND detail thumbnail #4
ចំណុចបhighlight:
  • ប្រព័ន្ធ Outrigger សម្រាប់ VTX A12 VT, VTX B28 VT និង Vertical Transporters ដែលឆបគ្នាផ្សេងទៀត
  • ស្ក្រូវ jacks ចំនួនបួនរួមបញ្ចូលលម្អិតលម្អិតក្នុងការលៃតម្រូវកម្ពស់
  • យន្តការកំណត់មុំដែលផ្អែកលើ spring ដែលច្នៃប្រឌិត
  • ការរចនាដែលតូចលង្ហិត និងស្light
  • ជួរ៖ -15 ដល់ +5 ដឺក្រេ
  • Vertical Transporter មិនរួមបញ្ចូលទេ
រួមបញ្ចូល:
(1) VTX A12 VT GND

ឯកសារ

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ការគាំទ្រ/សំណួរញឹកញាប់